DavidBM wrote:
Here’s a thought.
The lens has a bit more native distortion than most 85s and is designed to be used post correction.
So the lens is a bit wider than 85, giving 85 after correction.
Maybe before the correction, there is a bit of hard vignette that is cropped off by correction?
The OP says they were using no correction, so…
If that was the case the extreme corners would be black and cropped out when correcting the distortion.
In my examples I fully used the LR lens profile to correct distortion and vignetting.
It's something caused by the lens itself, but only in specific circumstances. My guess is that's why most users haven't noticed it (yet).
I only found those 2 examples that showed the same dark lines as the OP showed.
All my other photos show "normal" vignetting. Too much for my liking stopped down, but at least without those dark lines.
